Q. 245.0( 1 Vote )
How will you show with an example that metal oxides are basic in nature? Give the chemical equation also.
Bases generate OH- ions when dissolved in water. Metal oxides when dissolved in water form respective hydroxides. This proves that metal oxides are basic in nature.
For example: When sodium oxide reacts with water, it gives sodium hydroxide. Sodium hydroxide contains OH- ions which show that sodium oxide is basic in nature. The reaction is given as:
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i. What is observed when a solution of potassium iodide is added to a solution of lead nitrate taken in a test tube?
ii. What type of reaction is this?
iii. Write a balanced chemical equation to represent the above reaction.
A brown substance ‘X’ on heating in air forms a substance ‘Y’. When hydrogen gas is passed over heated ‘Y’, it again changes back into ‘X’.
i. Name the substance ‘X’ and ‘Y’
ii. Name the type of chemical reactions occurring during both the changes.
iii. Write the chemical equations of the reactions.Xam idea - Science